Emergencies happen. Things you don't expect, like fires, floods, hurricanes and tornadoes. If you own a home you probably think you are covered by your insurance. Maybe you are, but the insurance will not pay you for items that you do not have proof that you owned at the time of the disaster. So protect yourself by making a list of everything you own, when you bought it and it's current value. Take photos. Record serial numbers and keep everything in one place, like this book. If your boat ends up in someone else's yard - you would like to say yes. Yes, that is my boat and I can prove it.